Volume 71, Issue 4, October 2020, Pages 251-263
Azza E. Khaffagy; A. R. Morsi; Maha F. El-Enany
Volume 69, Issue 4, October 2018, Pages 403-425
T. M. Noor El-Deen; Naglaa F.S. Elbohy; K. E. Attia; Nemat Allah Y.O. Mokhtar